Grip Diameter Cylindrical Handle Fit Calculator (5th-95th percentile)

Audit cylindrical handle diameter against actual sampled hands and caller calibrated ratio band, retaining local exclusions; no invented anthropometric 5th/95th percentiles or safe grasp recommendation.

Description

A caller-calibrated handle-to-hand ratio creates an individual diameter interval.

A caller-calibrated handle-to-hand ratio creates an individual diameter interval. Observed sample fit should retain excluded subjects.^[1]

Enter a nonempty positive hand-length sample, ordered positive ratio pair and positive available diameter. Return subject bounds, inclusive fit flags and sample fit percent.

When to use Grip Diameter Cylindrical Handle Fit Calculator (5th-95th percentile)

Use Grip Diameter Cylindrical Handle Fit Calculator (5th-95th percentile) when you need to evaluate the supplied records under the calculation and evidence rules below. No anthropometric percentile or safe grasp recommendation is supplied.

Prepare measured task, body, furniture or already weighted exposure records. Supply independently verified caller policies, tables and comparison limits with matching units and conditions.

How to use Grip Diameter Cylindrical Handle Fit Calculator (5th-95th percentile) and understand its results

Prepare measured task, body, furniture or already weighted exposure records. Supply independently verified caller policies, tables and comparison limits with matching units and conditions.
Enter measuredHandLengthsMm, callerHandleToHandRatioBounds, availableHandleDiameterMm using the field table and calculation rules, then run the tool.
Read subjectCompatibleDiameterBoundsMm, subjectFitFlags, observedSampleFitPercent. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
measuredHandLengthsMm	Measured hand lengths mm	list of number	Required
callerHandleToHandRatioBounds	Caller handle to hand ratio bounds	list of number	Required
availableHandleDiameterMm	Available handle diameter mm	number	Required

Enter a nonempty positive hand-length sample, ordered positive ratio pair and positive available diameter. Return subject bounds, inclusive fit flags and sample fit percent.

diameterBounds=handLength×ratioBounds

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
subjectCompatibleDiameterBoundsMm	Subject compatible diameter bounds mm	list of list of number
subjectFitFlags	Subject fit flags	list of number
observedSampleFitPercent	Observed sample fit percent	number

json

{
  "input": {
    "measuredHandLengthsMm": [
      160,
      180,
      200
    ],
    "callerHandleToHandRatioBounds": [
      0.18,
      0.22
    ],
    "availableHandleDiameterMm": 36
  },
  "output": {
    "subjectCompatibleDiameterBoundsMm": [
      [
        28.799999999999997,
        35.2
      ],
      [
        32.4,
        39.6
      ],
      [
        36,
        44
      ]
    ],
    "subjectFitFlags": [
      0,
      1,
      1
    ],
    "observedSampleFitPercent": 66.66666666666667
  }
}

Limitations and assumptions

No anthropometric percentile or safe grasp recommendation is supplied.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Grip Span Optimal Range Two-Handle Tool Checker: A comfortable measured grip-span interval can overlap an adjustable tool interval. A single shared endpoint counts as compatible. For a complementary task, use Reach Zone Primary Envelope Radius Checker: A planar reach envelope can exclude tasks both too near and too far. Distances depend on the caller’s measured origin.

References

Grip Diameter Cylindrical Handle Fit Calculator (5th-95th percentile) — tool.io

Similar or alternative tools

Grip Span Optimal Range Two-Handle Tool Checker
A comfortable measured grip-span interval can overlap an adjustable tool interval. A single shared endpoint counts as compatible.
Reach Zone Primary Envelope Radius Checker
A planar reach envelope can exclude tasks both too near and too far. Distances depend on the caller’s measured origin.